Ceteth-20 Phosphate

Ceteth-20 Phosphate is the phosphate ester of PEG-20 cetyl ether that becomes anionic in water as pH rises. It's used as a co-emulsifier for mildly acidic to neutral formulas, improving stability, cleansing, and salt tolerance.
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Ingredient Snapshot

Overview
An emulsifier that stabilizes formulas in low-pH, acidic products.
Category
Emulsifying, Cleansing
Type
Emulsifier

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Performs well in low-pH systems, supporting clarity and a clean, refreshed after-feel. Supports emulsion stability in formulations sensitive to salts or acids.

Uses In Skincare & Cosmetics

Used in AHA/BHA lotions, exfoliating gel-creams, and low-pH facial cleansers. Also found in fluid moisturizers for smooth, uniform application.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

May cause mild skin or eye irritation, especially in acidic systems. Trace ethoxylation residues are typically kept very low by reputable suppliers. Introduce gradually if you have sensitive skin.

Is Ceteth-20 Phosphate a Good Ingredient?

Effective pH-responsive co-emulsifier for acidic to neutral systems with reliable performance. Can be mildly irritating in low-pH or exfoliant formulas, and as an ethoxylated material it relies on tight impurity controls. Consistent, low-risk performance is enough for Good, though not the strongest tier.

Products with Ceteth-20 Phosphate

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